1998 SOHC running real rough at idle

[1998Explodasport]

I just picked up a 1998 sport SOHC with 85k on it. It idles really rough and has no codes. I changed the plugs and wires and swapped a coil from another truck I had with no change. I also cleaned the MAF and replaced the fuel filter. I also checked the fuel pressure and it's fine also. I am thinking maybe a bad injector or even a weak cylinder but I definately want to hear from a few guys on here on what I can check next.

 

[2000StreetRod]

Clean the IAC valve

Congratulations on your purchase of a low mileage for the year Sport!

The next thing I would try is to clean the IAC valve. Did you add fuel injector cleaner after replacing the fuel filter?

 

[1998Explodasport]

I thought of cleaning the IAC but I just never had luck cleaning them and yes I did add fuel injector cleaner.